The Cardinals said Monday that Arians felt some discomfort after his return from Minneapolis on Sunday, leading his wife to take him to the hospital.

After a series of tests, he was released late Monday and was back at his desk on Tuesday.

Quarterback Carson Palmer said Arians “looked great. … Everything is back to normal.”

And Palmer said he had no concerns about Arians' long-term health.

“He's as tough as they come,” Palmer said. “He's as tough as any player in that locker room, and whatever happened, happened, and (he) got it checked out. He looks great, as you can see. It's business as usual for him and for us.”

The Cardinals activated safety Tyvon Branch from the injured list. Branch can practice this week, but can't play in a game until the Dec. 4 game against Washington.

Branch was chosen over running back Chris Johnson.

“It was the hardest decision,” Arians said. “I put it off as long as I could to make sure that we could do the right thing for the team.”

A team can remove only one player from injured reserve each season.

Branch got the nod because he can play on special teams, an area that the Cardinals have been woefully inadequate most of the season. Arians said five of the Cardinals' core special teams players are injured.

Arians was his usual blunt self, taking aim at one point at first-round draft pick Robert Nkemdiche.

The big defensive lineman has been inactive in six of the 10 games, although two earlier in the season were because of injuries. He was a healthy scratch the past two weeks.